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Construction method for installing bridge expansion joint

A construction method and technology of expansion joints, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of different widths of expansion joints, unclean gaps of concrete components, water accumulation, etc., so as to improve driving comfort and reduce car jumping. phenomenon, the effect of improving construction quality

Inactive Publication Date: 2012-06-27
NO 4 ENG CO LTD OF CCCC FIRST HARBOR ENG CO LTD
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Problems solved by technology

At present, the common quality problems of traditional expansion joint construction are: expansion joints are damaged after a short period of use; there are large differences in the width of expansion joints at both ends of the same joint; the gaps between concrete components are not clean, there are sundries, and water accumulation; the flatness of expansion joints exceeds the specification Require

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  • Construction method for installing bridge expansion joint
  • Construction method for installing bridge expansion joint
  • Construction method for installing bridge expansion joint

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Embodiment Construction

[0040] The bridge expansion joint installation and construction method of the present invention will be described in conjunction with the accompanying drawings and examples.

[0041] The bridge structure is generally composed of four basic parts: superstructure, substructure, bearing system and auxiliary facilities. The upper structure is also called the bridge span structure, that is, the main girder of the bridge; the lower structure includes pier columns, cover beams, foundations, etc.; the auxiliary facilities of the bridge include deck systems, expansion joints, etc.; Seats, sliding supports are used for expansion joints, and fixed supports are used for other positions. The support system is located between the upper structure and the lower structure, and its main function is to transfer the self-weight of the upper structure and the vehicle load to the lower structure. Bridge expansion joints mainly play a buffer role to prevent damage and deformation of the bridge stru...

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Abstract

The invention provides a construction method for installing a bridge expansion joint. The method comprises the following steps of: protecting the expansion joint before a deck is paved; spreading surface asphalt concrete; grooving the expansion joint; determining the installation time and the installation temperature of the expansion joint; positioning and regulating the expansion joint; welding the expansion joint; and pouring concrete to the expansion joint. The invention has the advantages that: the bridge expansion joint installation method is used for expansion joint flatness control construction; by actual engineering detection, the flatness of the expansion joint is basically controlled to be 1 to 2 millimeters, and the qualification rate reaches 100 percent; and the construction quality of the expansion joint is effectively improved, the driving comfort is improved, the jump phenomenon is reduced, and a good effect is achieved.

Description

technical field [0001] The invention relates to a bridge installation method, in particular to a bridge expansion joint installation construction method. Background technique [0002] The bridge expansion device is the weak part of the superstructure of the bridge engineering, directly bears the repeated action of the vehicle load, and is easily affected by various natural and external factors. Deformation of the bridge deck produces relatively large stress at the telescopic device. If the telescopic device does not have a certain strength, it is easy to be damaged. Similarly, if the flatness of the expansion joint is not good, it is vulnerable to greater impact and damage under the action of the vehicle load. The quality of the telescopic device is the key to ensure the smoothness of the roadway and the comfort of driving. At present, the common quality problems of traditional expansion joint construction are: expansion joints are damaged after a short period of use; ther...

Claims

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Application Information

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IPC IPC(8): E01D19/06
Inventor 康秋生张滨李志旺张超
Owner NO 4 ENG CO LTD OF CCCC FIRST HARBOR ENG CO LTD
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